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자료유형
학술저널
저자정보
Kim, Jin-Sung (Department of Material Science and Engineering, Korea University) Lee, Sun-Young (Division of Environmental Material Engineering Department of Forest Products Korea Forest Research Institute) Doh, Geum-Hyun (Division of Environmental Material Engineering Department of Forest Products Korea Forest Research Institute) Kang, In-Aeh (Division of Environmental Material Engineering Department of Forest Products Korea Forest Research Institute) Yoon, Ho-Gyu (Department of Material Science and Engineering, Korea University)
저널정보
한국목재공학회 목재공학(Journal of the Korean Wood Science and Technology) 목재공학 제37권 제5호
발행연도
2009.1
수록면
434 - 439 (6page)

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This study investigates the thermal properties of nanocomposites prepared from poly(lactic acid) (PLA), wood flour (WF) and montmorillonite (MMT) by melt compounding with a twin screw extruder. In order to enhance the mechanical properties of PLA/WF composites, maleic anhydride grafted PLA (MAPLA) is synthesized as a compatibilizer. MAPLA prepared in the laboratory is characterized using FR-IR. From SEM microphotographs, the presence of MAPLA has a positive effect on the mechanical properties of WF-reinforced PLA composites. The addition of WF/MAPLA into neat PLA increased the glass transition temperature ($T_g$). The addition of 1 to 5 wt% MMT into PLA/WF/MAPLA composite decreases the $T_g$. The cold crystallization temperature ($T_{cc}$) was decreased by the addition of MMT. The MMT could act as effective nucleating sites of PLA crystallization. The thermal stability evaluated by thermogravimetric analysis (TGA) is improved with the contents of MMT up to 3 wt%.

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